核、原子核 nuclei
原子核物理及核技术 Nuclear Physics and Nuclear Techniques
原子核时称为核磁共振 nuclear magnetic resonance ; NMR
这么大的原子核不可能是稳定的，但在足够长的时间内，在真空附近组装一个原子核以观察真空的衰变是可能的。
A nucleus that large cannot be stable, but it might be possible to assemble one next to a vacuum for long enough to observe the decay of the vacuum.
这些粒子主要是质子、电子和氦原子核，并且当他们与地球高层大气中的原子核碰撞，就能产生次级粒子簇射。
The particles are generally protons , electrons and helium nuclei and when they collide with nuclei in the Earth's upper atmosphere they can produce shower s of daughter particles.
核聚变中，小原子核相互碰撞，形成大原子核，释放能量。
Fusion involves colliding small atomic nuclei together to form larger ones, and thus releasing energy.
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